I'll admit up front that I'm a battery idiot. 99% of my batteries are still NiCd, and I have one NiMH pack. My charging bench consists of a Hobbico Accu-Cycle and 2 wall warts that I got from Tower years ago.

LiFePO4 batteries sound interesting, but 3.6V is too low and 7.2 is too high for my gear. How does one get these batteries into our 4.8 - 6v sweet spot? And what kind of exotic charger would I need?

EG